Spectrum analyzer

Ongoing

STD Spectrum analyzer

STM32

Audio

Analog

License: Public Domain

Mode:

Editors' pick

Update time： 2022-02-17 19:07:40

Creation time： 2021-08-18 11:48:02

Description

Below I will put some document to describe the circuit. I will do some simulation in LTSpice to look at some signal to understand the fuctionality of this application.

Design Drawing

schematic diagram

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Sheet_1
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PCB

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PCB_Spectrum analyzer
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BOM

BOM download Purchase Parts

ID	Name	Designator	Footprint	Quantity
1	470n	C1,C2	RAD-0.1	2
2	1u	C3,C4	RAD-0.1	2
3	47n	C5,C6	RAD-0.1	2
4	33n	C7,C8	RAD-0.1	2
5	100n	C9,C10	RAD-0.1	2
6	330n	C11,C12	RAD-0.1	2
7	10n	C13,C14	RAD-0.1	2
8	4.7n	C15,C16	RAD-0.1	2
9	10u	C17	CAP-D3.0×F1.5	1
10	10k	R1,R2,R7,R8,R13,R14,R17,R20,R25,R28	R_AXIAL-0.3	10
11	1k	R3,R4,R6,R9,R12,R15,R18,R21,R24,R27	R_AXIAL-0.3	10
12	5k	R5,R10,R11,R16,R19,R22,R23,R26	R_AXIAL-0.3	8
13	1Meg	R29	R_AXIAL-0.3	1
14	220	R30	R_AXIAL-0.3	1
15	Blue_Pill	U1	BLUE PILL COPY	1
16	LM324	U2,U3,U4	DIP-14_L17.8-W10.2-P2.54-BL	3
17	TFT 1.8 128x160 ST7735S SPI with CardReader	U5	TFT 1.8 SPI 128X160 WITH CARDREADER	1